For a large number of people in our society, social networks of one kind or another are becoming dominant forms of media in our lives. This is not all bad and there is much to be said for Facebook and Twitter, LinkedIn and Pinterest. But these networks also have their downsides and dangers, and sometimes we need to step back. Today, use no social networks. Don’t open Twitter, Facebook, or any other social network. Instead, write a hand written note to a friend or call someone with whom you’ve lost touch.